The AirTAC GFR400C10LJC2WTK AirTAC Filter Regulator NPT3/8 5 um is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has See datasheet ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR400C10LJC2WTK is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is built with a 3/8 in NPT port, a 5 um filter element (the finer of the two published grades), a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and a low-pressure regulator type for applications set well below standard working pressures. It ships with a round external gauge scaled in psi and a reverse/check valve fitted, and is supplied without a mounting bracket.
This is a genuine AirTAC part. The GFR filter-regulator family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of 40 um or 5 um elements, differential-pressure, automatic or manual drains, gauge and scale options, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing or any datasheet figure for your application before ordering.
| Model | GFR400C10LJC2WTK AirTAC Filter Regulator NPT3/8 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard scale |
| Reflux valve | Not fitted |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GFR400 | G-series filter regulator, 400 body — sets the port range. |
|---|---|
| C1 | Port size See datasheet. This body offers 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR400 · See datasheet · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-C1 (two-unit set) |
On a fixture-clamping manifold that holds workpieces at a deliberately low regulated pressure, this unit filters the shop air to 5 um and regulates it with the low-pressure type, while the check valve holds the set circuit if upstream supply dips.
Feeding tool-change cylinders and air-blast nozzles on a machining centre, the 5 um element keeps fine debris out of directional valves and the differential-pressure drain clears condensate without operator attention.
On a laboratory or QA test bench running pneumatic instruments at reduced pressure, the round psi gauge gives a direct readout in familiar units and the low-pressure regulator type matches the modest setpoints.
Size 400 with a 3/8 in port sits in the upper-middle of the GFR range; step up to size 600 for larger ports and higher flow, or down to 200/300 for compact lines. The 5 um element (code W) suits air that feeds sensitive valves, cylinders or instruments; the 40 um standard grade is enough for general shop-air protection. The differential-pressure drain needs no timer or operator, but if your line sees low, intermittent flow a manual or automatic drain may suit better - ask. The low-pressure regulator type is intended for setpoints below the standard range; its exact adjustment range is not published, so confirm it with us against your setpoint. Gauge here is the external round type, psi scale (MPa and bar scales exist). Thread is NPT; PT and G are order options. No bracket is included, so plan your own mounting.
Flow for this family is published as curves, not a single rating, so we cannot quote one number here. Send us your flow and pressure requirements and we will confirm sizing from the datasheet before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as curves, not as a single rated number, so we do not quote one here. Tell us your flow and working pressure and we will confirm sizing from the datasheet on request before you order.
The L code marks the low-pressure regulator variant, intended for setpoints below the standard regulator range. Its exact adjustment range is not published in the material we hold, so confirm your setpoint with us and we will verify it from the datasheet. Everything else decodes normally: 3/8 in NPT port, 5 um element, differential-pressure drain, round psi gauge, check valve fitted, no bracket.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.